FORESTRY
AGRICULTURAL STATISTICS AND ECONOMICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is the critical value for an 80% confidence interval?
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1.282
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1.036
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1.960
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0.841
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Explanation:
Detailed explanation-1: -What an 80% confidence interval means is: when we construct a confidence interval for a population parameter, like the mean, 80% of the time the true population parameter will be contained in this range.
Detailed explanation-2: -The z-value associated with a two-sided 82% confidence interval is 1.341.
Detailed explanation-3: -Suppose we want to find z/2 for some test that is using a 90% confidence level. In this case, would be 1 – 0.9 = 0.1. Thus, /2 = 0.1/2 = 0.05.
There is 1 question to complete.